Sorry for the lack of plunk, I'm not sure how to simulate promises on
plunker
On Friday, July 11, 2014 9:23:14 AM UTC+1, Liam Ryan wrote:
>
> Hi All,
>
> I'm trying to be clever and create prototypes to encapsulate a lot of my
> behaviour. I'm running into issues when I want a fulfilled promise to call
> another function in my prototype.
>
> Consider the following -
>
> function myClass ( ) {
> this.data = Object.create(this.data);
> this.$scope = Object.create(this.$scope);
> }
>
> myClass.prototype = {
> $scope: {},
> data: {},
> getData: function (url) {
> $http({...http stuff here...})
> .then( function (httpData) {
> this.filterHTTPData( httpData );
> });
> },
> filterHTTPData = function (data ) {
> console.log(data);
> }
> }
>
>
> The issue is that when the callback is executed (promise fulfilled) the
> "this" object will refer to window, not my instance of myClass.
>
> I've tried working around this as follows but it feels bad and will fail
> if there's any kind of delay ( I use callbacks in several places and nested
> promises, probably colliding with other tempobjects).
> Can anyone suggest a better way to handle this situation?
>
> myClass.prototype = {
> $scope: {},
> data: {},
> getData: function (url, $scope) {
> *$scope.tempObject = this;*
> $http({...http stuff here...})
> .then( function (httpData) {
> *var thisObject = $scope.tempObject;*
> this.filterHTTPData( httpData );
> *delete $scope.tempObject*
> });
> },
> filterHTTPData = function (data ) {
> console.log(data);
> }
> }
>
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